From ArchitectureWeek.com:

The "Sympathetic Additions" award in the commercial or institutional category went to ARCHITEXAS for the new tower of the century-old Cathedral Santuario de Guadalupe, Dallas, Texas. The original church design had featured a steeple and spire, but these were never built. When the Dallas Roman Catholic Diocese decided to add these features a few years ago, they opted to follow the 1889 plan of the original architect, Nicholas Clayton.

The new 225-foot- (70 meter-) tall bell tower had to support 49 bells weighing a total of 49,000 pounds (22,000 kilograms). To support the load, four 54-foot by 24-inch (16-meter by 60-centimeter) cased piers were extended 8 feet (2.4 meters) into the limestone bedrock. Clad in brick and cast stone, the tower now looks as if it has always been part of the historic structure.